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Targeted deletion of BMK1/ERK5 in adult mice perturbs vascular integrity and leads to endothelial failure

Big mitogen-activated protein kinase 1 (BMK1), also known as ERK5, is a member of the MAPK family. Genetic ablation of BMK1 in mice leads to embryonic lethality, precluding the exploration of pathophysiological roles of BMK1 in adult mice. We...

Authors: Hayashi M, Kim SW, Imanaka-Yoshida K, Yoshida T, Abel ED, Eliceiri B, Yang Y, Ulevitch RJ and Lee...

The cyclic adenosine 5' monophosphate response element modulator supresses IL-2 production in stimulated T cells by a chromatin-dependent mechanism

The production of IL-2 is tightly controlled by several transcription factors that bind to the IL-2 promoter. The cAMP response element modulator (CREM) is known to form complexes with CREB and bind to the -180 site of the IL-2 promoter in anergic...

Authors: Tenbrock K, Juang YT, Tolnay M and Tsokos GC

Overexpression of c-maf is a frequent oncogenic event in multiple myeloma that promotes proliferation and pathological interactions with bone marrow stroma

The oncogene c-maf is translocated in approximately 5%-10% of multiple myelomas. Unexpectedly, we observed c-maf expression in myeloma cell lines lacking c-maf translocations and in 50% of multiple myeloma bone marrow samples. By gene expression...

Authors: Hurt EM, Wiestner A, Rosenwald A, Shaffer AL, Campo E, Grogan T, Bergsagel PL, Kuehl WM and Staudt...

NF-kappaB regulates the expression of human complement receptor 2 gene

CR2 is a key regulator of the B cell response to Ag. Here we show that NF-kappaB enhances the expression of the human CR2 gene. Promoter truncation, deletion, and mutagenesis studies indicated a functional role for a consensus NF-kappaB promoter...

Authors: Tolnay M, Vereshchagina LA and Tsokos GC

Dual-specificity phosphatase 5 (DUSP5) as a direct transcriptional target of tumor suppressor p53

Dual-specificity phosphatase 5 (DUSP5), a VH1-like enzyme that hydrolyses nuclear substrates phosphorylated on both tyrosine and serine/threonine residues, has a potential role in deactivation of mitogen- or stress-activated protein kinases. Using...

Authors: Ueda K, Arakawa H and Nakamura Y

Wnt-5a inhibits the canonical Wnt pathway by promoting GSK-3-independent-catenin degradation

Wnts are secreted signaling molecules that can transduce their signals through several different pathways. Wnt-5a is considered a noncanonical Wnt as it does not signal by stabilizing beta-catenin in many biological systems. We have uncovered a new...

Authors: Topol L, Jiang X, Choi H, Garrett-Beal L, Carolan PJ and Yang Y

Regulation and targeting of antiapoptotic XIAP in acute myeloid leukemia

XIAP is a member of the inhibitors-of-apoptosis family of proteins, which inhibit caspases and block cell death, with prognostic importance in AML. Here we demonstrate that cytokines regulate the expression of XIAP in leukemic cell lines and primary...

Authors: Carter BZ, Milella M, Tsao T, McQueen T, Schober WD, Hu W, Dean NM, Steelman L, McCubrey JA and...

Rapid and highly efficient gene transfer into natural killer cells by nucleofection

Natural killer (NK) cells are important mediators of virus- and tumor-specific immune responses. The transfection of genes into NK cells has been proven difficult and so far requires infection with virus-based vectors. Here, the application of a...

Authors: Trompeter HI, Weinhold S, Thiel C, Wernet P and Uhrberg M

Production of PtdIns(5)P by the phosphoinositide 3-phosphatase myotubularin in mammalian cells

MTM1, the gene encoding myotubularin (MTM1), is mutated in the X-linked myotubular myopathy (XLMTM), a severe genetic muscular disorder. MTM1 is a phosphoinositide phosphatase hydrolyzing phosphatidylinositol 3-phosphate (PtdIns(3)P) in yeast and in...

Authors: Tronchere H, Laporte J, Pendaries C, Chaussade C, Liaubet L, Pirola L, Mandel JL and Payrastre B

Mesenchymal-epithelial interactions in the skin: increased expression of dickkopf1 by palmoplantar fibroblasts inhibits melanocyte growth and differentiation

We investigated whether or not the topographic regulation of melanocyte differentiation is determined by mesenchymal-epithelial interactions via fibroblast-derived factors. The melanocyte density in palmoplantar human skin (i.e., skin on the palms...

Authors: Yamaguchi Y, Itami S, Watabe H, Yasumoto K, Abdel-Malek ZA, Kubo T, Rouzaud F, Tanemura A, Yoshikawa...

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